ELECTRICAL AND THERMAL INVESTIGATIONS OF THE PHASE-TRANSITIONS IN AMMONIUM PURPURATE MUREXIDE C8H4O6N5.HN4

被引：17

作者：

ABDELKADER, MM

ELKABBANY, F

MOSAAD, MM

ELSHAWARBY, A

机构：

[1] FAC EDUC KAFR ELSHEIKH, DEPT PHYS, KAFR AL SHEIKH, EGYPT

[2] ZAGAZIG UNIV, FAC SCI, DEPT PHYS, BENHA, EGYPT

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1992年 / 53卷 / 02期

关键词：

AMMONIUM PURPURATE; MUREXIDE; RESISTIVITY; DIELECTRIC CONSTANT; PYROELECTRIC CURRENT;

D O I：

10.1016/0022-3697(92)90057-K

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Based on some electrical properties (resistivity, dielectric constant and pyroelectric current) measured between 40 and 300-degrees-C, combined with the DTA thermogram in the same temperature range, we observed two structural phase transitions in ammonium purpurate (APP) "murexide" C8H4O6H5.NH4 at temperatures of about 100 and 257-degrees-C. The data are correlated to the reorientation and distortion of the NH4 ions, which are closely related to the different possibilities of the N-H...X hydrogen bonding scheme.

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页码：283 / 286

页数：4

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